Mark A. Torres

Assistant Professor

Room Number: 224
Google Scholar Link


B.A. Pitzer College
Ph.D. University of Southern California


low-temperature geochemistry, geobiology, surface processes


Broadly, my research focuses on the biogeochemical cycles of carbon, oxygen and sulfur with the intention of understanding the links between physical transport processes and chemical reactions. For this work, I combine laboratory experiments, field measurements, and numerical models.

Selected Publications

Torres, Mark A., et al. "Riverine evidence for isotopic mass balance in the
Earth’s early sulfur cycle." Nature Geoscience (in press)

Torres, Mark A., et al. "Model predictions of long-lived storage of organic carbon in river deposits." Earth Surface Dynamics 5.4 (2017): 711.

Torres, Mark A., et al. "Mixing as a driver of temporal variations in river hydrochemistry: 1. Insights from conservative tracers in the Andes‐Amazon transition." Water Resources Research (2017).

Torres, Mark A., et al. "The acid and alkalinity budgets of weathering in the Andes–Amazon system: Insights into the erosional control of global biogeochemical cycles." Earth and Planetary Science Letters 450 (2016): 381-391.

Torres, Mark A., A. Joshua West, and Gaojun Li. "Sulphide oxidation and carbonate dissolution as a source of CO2 over geological timescales." Nature 507.7492 (2014): 346-349.

Clark, Kathryn E., Torres, Mark A., et al. "The hydrological regime of a forested tropical Andean catchment." Hydrology and Earth System Sciences 18.12 (2014): 5377-5397.

Torres, Mark A., and Robert R. Gaines. "Paleoenvironmental and Paleoclimatic Interpretations of the Late Paleocene Goler Formation, Southern California, USA, Based on Paleosol Geochemistry." Journal of Sedimentary Research 83.8 (2013): 591-605.